<template>
  <div>
          <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
        <!-- 卡片视图区 -->
    <el-card>
        <div id="main" style="width: 600px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    data(){
        return{
            options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
        }
    },
    //mounted函数代表页面上的元素已经渲染完毕
   async mounted(){
        //基于准备好的dom，初始化echarts实例
         var myChart = echarts.init(document.getElementById('main'));

         const{data:res}=await this.$http.get('reports/type/1')
        if(res.meta.status!==200){
            return this.$message.error('获取数据失败')
        }


//准备数据配置项

const result = _.merge(res.data,this.options)
      //展示数据
      myChart.setOption(result)
    },
}
</script>

<style lang="less" scoped>

</style>